Dix, Trevor G.2008-11-182008-11-181969-01Dix TG. 1969. Notes. Aggregating in the echinoid Evechinus chloroticus. Pac Sci 23(1): 123-124.0030-8870http://hdl.handle.net/10125/3378Evechinus chlorolicus, a large regular urchin endemic to New Zealand, shows marked clumping within populations, observable throughout the year in the field (Fig. 1) and also demonstrated by quadrat sampling (variance ratio test for 60, m2 samples along a transect gave P<0.005).en-USArticle